tofsee | 8d6d6e9a34683ac82b391d1725b233f7b4713978f6a3a528a2062425fb90f537

Analysis

max time kernel
3s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2024, 20:00

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General

Target

42447fa47634362aeff2746d2ad7fe43.exe
Size

11.4MB
MD5

42447fa47634362aeff2746d2ad7fe43
SHA1

e4c1aa0f40112f20e1f41f104d61a1ae265c29d4
SHA256

8d6d6e9a34683ac82b391d1725b233f7b4713978f6a3a528a2062425fb90f537
SHA512

5776f74befea8bbaa87495f57063bc417c7045f251d9f93aac59a10b9032210ccb7bea96dcf904c0ccc3528bb55c50d13451e5c58067aeb6b245d4195c2d3842
SSDEEP

49152:nGvEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE:nG

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
3664	netsh.exe

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1852	sc.exe
3136	sc.exe
1644	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
836	2688	WerFault.exe	19
4496	740	WerFault.exe	103

C:\Users\Admin\AppData\Local\Temp\42447fa47634362aeff2746d2ad7fe43.exe
"C:\Users\Admin\AppData\Local\Temp\42447fa47634362aeff2746d2ad7fe43.exe"
1⤵
PID:2688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rlvutgfn\
  2⤵
  PID:2024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iewuclog.exe" C:\Windows\SysWOW64\rlvutgfn\
  2⤵
  PID:1564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rlvutgfn binPath= "C:\Windows\SysWOW64\rlvutgfn\iewuclog.exe /d\"C:\Users\Admin\AppData\Local\Temp\42447fa47634362aeff2746d2ad7fe43.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rlvutgfn "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rlvutgfn
  2⤵
  - Launches sc.exe
  PID:1644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2688 -s 592
  2⤵
  - Program crash
  PID:836
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  PID:3664

C:\Windows\SysWOW64\rlvutgfn\iewuclog.exe
C:\Windows\SysWOW64\rlvutgfn\iewuclog.exe /d"C:\Users\Admin\AppData\Local\Temp\42447fa47634362aeff2746d2ad7fe43.exe"
1⤵
PID:740
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:4472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 740 -s 512
  2⤵
  - Program crash
  PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2688 -ip 2688
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 740 -ip 740
1⤵
PID:1152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/740-13-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/740-18-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/740-10-0x0000000000F10000-0x0000000001010000-memory.dmp

Filesize
1024KB

Download
memory/2688-2-0x0000000000C70000-0x0000000000C83000-memory.dmp

Filesize
76KB

Download
memory/2688-1-0x0000000000C90000-0x0000000000D90000-memory.dmp

Filesize
1024KB

Download
memory/2688-4-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/2688-8-0x0000000000C70000-0x0000000000C83000-memory.dmp

Filesize
76KB

Download
memory/2688-7-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/4472-11-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4472-17-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4472-16-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4472-19-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads